An OMEGA Te ch n o lo gie s Co m p a n y
DP18 Series
Model DP18-AT2
AC Ammeter
INSTRUCTION
SHEET
M2099/1294
AC AMMETER for current transformer X/5
THEINPUTALLOWSDIRECTCONNECTIONTOACURRENTTRANSFORMER(CT)WITHA5A.SECONDARY,WITHOUTNEEDFORAN
INTERMEDIATESTEPDOWN.
SPECIFICATIONS
FRONTVIEW
FIG. 1
DISPLAYS . . . . . . . . . . . . . . . . . . . . . .
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 0.56" (14.2 mm.)
SYMBOLS . . . . . . . . . . . . . . . . . . . . . . 1.8.8.8
3
digits, 7 segment, red LED
½
DECIMALPOINTS . . . . . . . . . . . . . . . . Selectable by jumpers
OVERRANGEINDICATION . . . . . . . . . Display flashes
INPUTCONFIGURATION . . . . . . . . . . . Bipolar single
ZERO . . . . . . . . . . . . . . . . . . . . . . . . . Automatic
SPANADJUSTMENT . . . . . . . . . . . . . . ± 5 %
SPAN
OFFSET
SPAN:ADJUSTTHEMAXIMUMREADING.
OFFSET:NOTINSERVICE
CONVERTER . . . . . . . . . . . . . . . . . . . . Dual-slope, average value
SIGNALINTEGRATIONPERIOD . . . . . 80 ms.
SPAN ADJUSTMENT IS ACCESSIBLE BEHIND THE LOW DOOR.
READRATE . . . . . . . . . . . . . . . . . . . . 3.12 / sec.
RANGES . . . . . . . . . . . . . . . . . . . . . . . See table selection fig. 3
HOLD . . . . . . . . . . . . . . . . . . . . . . . . . Optional
REARVIEW
Setpoint R1
(option)
Setpoint R2
(option)
FIG. 2
NOISEREJECTIONNMR . . . . . . . . . . . 50 dB. 50/60 Hz.
ACCURACY . . . . . . . . . . . . . . . . . . . . 0.2 % ± 1 count
WARMUPTORATEDACCURACY . . . 5 minutes
SPANTEMPCO . . . . . . . . . . . . . . . . . . 150 ppm.
ZEROTEMPCO . . . . . . . . . . . . . . . . . . 2.5 µV/°C.
Isolated digital output
(option)
D
C
B
A
OPERATINGTEMPERATURE . . . . . . . 0 to 50 °C (32 to 122 °F)
STORAGETEMPERATURE . . . . . . . . . -40 to 80 °C (-40 to 176 °F)
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 310 gr. (0.68 lb)
CASEMATERIAL . . . . . . . . . . . . . . . . ABS, DIN 43700, black color
STANDARDPOWER . . . . . . . . . . . . . . 115 Vac. ± 10 %, 50/60 Hz.
POWERCONSUMPTION . . . . . . . . . . . 5.5 VA for AC.
SIGNAL
INPUT
1
10
+
ANALOG OUTPUT
(OPTION)
-
ELECTRICALCONNECTIONS . . . . . . . Push-in cable connectors
BURN-IN . . . . . . . . . . . . . . . . . . . . . . . 24 h.
HOLD, latch the reading
display, while these pins
are linked
POWERSUPPLY
see instrument label
RANGESELECTION
FIG. 3
GROSSSPANADJUSTMENT
PT1
D
F
B
A
C
E
G
C
B
A
SIGNALCONDITIONER
COMPONENTSVIEW
SIGNALINPUT
SELECTORS1
I NOMINAL
Amp.AC
READING
Amp.AC
RESOLUTION
Amp.AC
I NOMINAL
Amp.AC
READING
RESOLUTION
CLOSE
CLOSE
PLACE THE PLUG-IN JUMPER ON THE
SELECTOR S1, IN FUNCTION OF THE
NOMINAL CURRENT TRANSFORMER,
AND THE DECIMAL POINT JUMPER
ON THE CORRESPONDING POSITION
(FIG.5). TO OBTAIN THE INDICATED
PERFORMANCE, USE CURRENT
TRANSFORMERSCLASS 0.5 ORBETTER.
Amp.AC
JUMPER
Amp.AC
JUMPER
5
5.00
D
F
150
250
150.0
250
G
B
0.01
0.1
10
10.00
15
25
15.0
25.0
40.0
50.0
60.0
100.0
A
B
C
D
E
F
400
500
400
500
C
D
E
F
40
600
600
0.1
1
50
1000
1500
1000
1500
60
G
100
CCD1294APC2BA
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